Belt.



V G. FOUILLARON.

- BEL-'1'. APPLICATION FILED JAN. 22, 1906:

Patented Oct. 27', 1908.

GUSTAVE FOUILLARON, OF' PARIS, FRANCE.

BELT.

Specification of Letters Patent.

Patented Oct. 27, 1908.

Application filed January 22, 1906. Serial No. 297,190.

To all whom it may concern:

Be it known that I, GUsTAvE FoUILLARoN, a citizen of the FrenchRepublic, residing at Paris, France, in the Department of the Seine,have invented certain new and useful Improvements in and Relating. toBelts, of which the following is a specification.

My invention relates to a form of belt particularly for use withexpanding pulleys of the ty e having a pair of conical crown members wich interlock together in different relations to form a move for thebelt of varying diameter. With ulleys of this class there are presentedaternately raised and sunken portions on each side of the pulley groove,and it is desirable to have the belt laterally flexible so as to assumea sinuous form corresponding to the contour of the pulley groove. Inthis Way the belt cooperates with the pulley to give a very highfrictional torque; much greater than would be had by an ordinary beltand pulley having a simple circumferential groove. It is the particularobject of my invention to rovide a belt of the above character which isvery strong in addition to its characteristic of lateral flexibility,and furthermore simple and easy to construct.

With this and other objects in view, my invention consists in thefeatures of construction and combinationv hereinafter set forth andclaimed.

In the drawin Figure 1 is a side view of a pulley adapte to be used witha belt embodying the principles of my invention. Fig. 2 is a view of thesame in a relation to present its smallest effective diameter;. ig. 3 isa top view of the belt; Fig. 4 is a section on the line 11 of Fig. 3,Fig. 5 is a perspective view of the same; Fig. 6 is a View showing aslightly modified form of belt. Referring to the drawings in high likeparts are designated by the same reference sign, a designates themembers of the exanding pulleys which are of generally con ical outlinehaving outer rims b from which roject inward the fingers c whichinterlock 1n the manner clearly shown in Figs. land 2. The portions ofthe rims e between the fingers c are depressed so as to producealternately raised and sunken portions adapted to grasp a belt in asinuous path. d indicates supporting webs or devices for the members a.One or both of the parts d are made slidable on the shaft so as toadjust the expanding pulley to diameters.

My preferred form of belt is illustrated.

in Figs. 3, 4 and 5. I provide a plurality of straps h on which areassembled trapezoidal plates g which may be made of leather or similarmaterial. These plates 9 are assembled into groups as clearly shown inFigs. 3 and 5, in any convenient way, as by the use of intervening wirestaples or s aoersi. A convenient construction is that s lOWIl in whichthe staples i are passed through the straps h.

In Fig. 6 a slightly modified construction is shown in which the groupsof tra ezoidal plates 9 are perforated with holes w ich are not inalinement with one another for the separate groups so that the straps htake a zig zag course along the length of the belt. In passing betweenthe groups of plates g, the straps it have an inclined direction whichnecessitates a certain se aration of the grou s from one another. itheither form of elt above described, it is evident that great lateralflexibilit is secured on account of the spacing o' the groups of plates9 which have a comparatively free movement limited only by the degree ofseparation of the se arate groups. This space is made to accord with theneeds of the expanding pulley so that the belt takes a sinuous formthereabout -corresponding to the alternate raised and sunken portions ofthe faces of the groove.

What I claim, is

A belt for use with pulleys of the class described, and comprisin aplurality of trapezoidal plates and a purality of straps passedtherethrough, the iiferent plates being assembled in groups upon thestraps, the different groups being spaced a art from sinuous form, asand or the purpose set forth.

In testimony whereof I have hereunto set ifferent effective I oneanother, whereby the belt is flexible laterally so as to be ca able ofassuming a my hand in presenp e of two subscribing witnesses.

GUSTAVE FOUILLARON.

Witnesses HENRY DANZER, 'LUOIEN OREsPIN.

